标准差比较（两组数据）
2015-07-05 01:25
本GeoGebra范例演示如何比较两组数据的标准差与离散程度。通过可视化数据点、均值参考线及偏差线段，直观呈现各组数据围绕均值的波动情况。同时包含箱线图（Boxplot）对比展示，结合均值计算与标准差（SD）分析，帮助学习者深入理解统计学中数据分布、集中趋势与离散性的核心概念。
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